Solanaceae Fortnight:: Solanum for id from Darjeeling-NS Feb 57/57

[Nidhan Singh]

Dear All,

This herb is surely a representative of "Solanum nigrum complex"..

Please suggest id for this, I suspect it closer to S. villosum, than any of other two, was recorded from margin of LBG, Darjeeling..

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Regards,

Dr. Nidhan Singh

Assistant Professor
Department of Botany
I.B. (PG) College
Panipat-132103 Haryana
Ph.: 09416371227

[J.M. Garg]

Forwarding again for Id confirmation or otherwise please.

Some earlier relevant feedback:

	efi page on Solanum villosum

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[surajit koley]

Interesting uploads.

Thank you

Regards

[Gurcharan Singh]

I think S. villosum subsp. mineatum.

Dr. Gurcharan Singh

Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297  Mob: 9810359089

http://www.gurcharanfamily.com/ 
http://people.du.ac.in/~singhg45/

[surajit koley]

Sir,

I would like to use this thread to record what I have observed about Solanum nigrum complex around our region. I have uploaded 3 members which have been identified as villosum, nigrum and americanum. But, my nigrum species received a question mark in a personal mail and I have addressed it during last fortnight. The points of doubt were - 1) S. nigrum is uncommon species, 2) flowers after spring 3) nigrum is almost similar to villosum (?).

• all 3 I have recorded so far are still flowering and fruiting. Flowering season depends on climatic and soil condition of a place. What month(s) suits in HP for a given species may not be same in WB, and we will have to take care of elevation too
• description of the 3 species in FoC is similar to the pdf at http://www.bioversityinternational.org/uploads/tx_news/Black_nightshades__Solanum_nigrum_L._and_related_species_337.pdf
• nowhere I could find any document saying villosum fruits can be black or purple

Assuming my nigrum species has been correctly identified I would like to record my observation of this plant -

1. S. nigrum has almost entire leaf, different looking than the villosum I have, one or two bears similarity to villosum to some extent
2. the leaf size of well built (which has been not disturbed to grow) nigrum is rather bigger than the sizes mentioned in FoC or in pdf. Leaf at base can have lamina of more than 10 cm long.
3. nigrum fruits here have both strongly reflexed sepals and not so recflexed ones. Usually they are reflexed
4. on one occasion I have seen a few flowers on a plant have light purplish petals but other flowers on the same individual were white

I think my nigrum rather shows feature of Solanum scabrum Mill. or have a tendency toward it!

I didn't find any S. villosum with entire leaf.

Thank you

Regards

surajit